Results 71 to 80 of about 3,214,955 (326)

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Design of optical fiber delay line with large delay range and low insertion loss

Frontiers in Physics
For the application of continuously adjustable optical fiber delay lines, a large delay range can increase the instrument’s measurement range. Increased insertion loss of components will reduce the signal-to-noise ratio of the collected signal ...
Kai Wang, Kai Wang, Anqi Liu, Xinxin Kong, Zhou Wu, Rui Zhang, Wenxi Zhang   +6 more
doaj   +1 more source

Compact focusing grating couplers for silicon-on-insulator integrated circuits [PDF]

, 2007
—We report experimental results on compact and broadband focusing grating couplers, both in silicon-on-insulator (SOI) and gold on SOI. An eight-fold length reduction of the coupling structure from fiber to photonic wire in SOI, as com-pared to a linear ...
Dirk Taillaert, Dries Van Thourhout, Frederik Van Laere, Jonathan Schrauwen, Roel Baets, Stijn Scheerlinck, Student Member, Student Member, Student Member, Tom Claes, Wim Bogaerts   +10 more
core   +2 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere

IEEE Photonics Journal, 2019
Aiming at the demand for high-capacity wireless-fiber link, the coupling efficiency of Laguerre Gaussian (LG) vortex beam into parabolic fiber under atmospheric turbulence is first investigated.
Lin Yu, Yixin Zhang
doaj   +1 more source

Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber [PDF]

, 2009
Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber is experimentally and numerically investigated. Guiding light in such fiber occurs via two mechanisms: photonic bandgap in the central silica core or total internal reflection
B., Kibler, C., Finot, J., Fatome, J., Wojcik, M., Szpulak, T., Martynkien, W., Urbanczyk, Wabnitz, Stefan   +7 more
core  

A lens-coupled scintillation counter in cryogenic environment

, 2011
In this work we present an elegant solution for a scintillation counter to be integrated into a cryogenic system. Its distinguishing feature is the absence of a continuous light guide coupling the scintillation and the photodetector parts, operating at ...
, , , , , , , A Amato, A description of this experimental method in condensed matter research can be found in: A. Schenck, A Stoykov, A. Kerek ., I. Britvich ., J A Konter, J Rodriguez, K Sedlak, M Bartkowiak, R Scheuermann   +16 more
core   +1 more source

Control of critical coupling in a ring resonator fiber configuration: application to wavelength-selective switching, modulation, amplification, and oscillation [PDF]

, 2001
By controlling the internal loss of a ring resonator near critical coupling, we demonstrate control of the transmitted power in a fiber that is coupled to the resonator.
Choi, John M., Lee, Reginald K., Yariv, Amnon   +2 more
core   +1 more source

Comparative Study of Uniform and Nonuniform Grating Couplers for Optimized Fiber Coupling to Silicon Waveguides

, 2016
We have investigated the ultimate limits of nonuniform grating couplers (NGCs) for optimized fiber coupling to silicon waveguides, compared to uniform grating couplers (UGCs).
Moon-Hyeok Lee, J. Jo, Dong Wook Kim, Yudeuk Kim, Kyong-Hon Kim   +4 more
semanticscholar   +1 more source

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source